Edward  lassost



E. LARSON.

CAR DOOR OPERATOR.

APPLICATION FILED mm2?. 1920.

1,399,627. kPatented Dec. 6, 1921.

31a/vanto@ atbozwuj W/m/ESSES EDWARD LARSOIN', 0F GRAND FORKES, NORTH DAKOTA.

CARUOGR UPERATR.

Specification of Letters Patent.

Patented Dec.. 6, 1921..

Application filed April 27, 1920. Serial No. 376,97ll.

.To ZZ whom it may concern Be it known that l, Enwnnn Lesson, a citizen ol the United `States, residingl at Grand Forks, in the county oi Grand `lorks and State o'l North Dakota, have invented certain new and useful Improvements in CanDoor Operators, et which the following is a specilication.

This invention relates to door operating apparatus and more particularly to opening and closing mechanism for sliding doors.

`The object of the invention is to provide a sliding door with supporting and operating mechanism whereby rigid tracks and rollers are dispensed with and sticking or the door prevented. i

Another object is to provide such mechanism whereby the door may be operated with very little exertion.

Another object is to provide mechanism of this characterl which is very inexpensive and yet thoroughly efficient for the purpose -fior which is intend-ed.

lli/ith the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details oli construction hereinafter described and claimed, it being understood that changes in the precise embodiment ott the invention herein disclosed may be made within the scope of what is claimed without departing trom the spirit of the inven tion. l l

ln the accompanying; drawings:

Figure 1 represents a side elevation ot a sliding door equipped with this improved operating mechanism.

Fig. 2 is a top plan view thereof; and

Fig. 3 is a detail vertical section taken on the line of Fig. 1.

In the embodiment illustrated a door :trame 1 is shown surrounding a door opening 1a which is adapted to be closed by a sliding door 2. The frame 1 is equipped on its outer 'face along its low-er edge with rests in the form of brackets 3 spaced longitudinally and designed to support the door when in open or closed position.

The door 2 has secured to one face transversely alined spaced keepers 4 and 5 in which are fulcrumedlevers 6 and 7 said levers being shown fulcrumed midway their ends. Pivotally connected with one end ot lever 7 isa link or bar 8, the other end of which is pivoted tothe upper portion of the door ramel, as is shown at 9, and is spaced from said 'frame by a spacing sleeve 10 (see Figs. 2 and 3). rlhe other end of lever 7 is pivotally connected with one end oi' a link or bar 11, the other end of which is pivotally connected with the lower portion of the door trame 1 as shown at 1.2 and is spaced there i'rom by a spacing sleeve 13. The pivotal connection oi: the link 11 at the bottom of the door trame is in a plane to the lett oli l the connection 9 of link 8.

'lhe lever 6 has pivoted to one end a link or bar 14E the other end of said bar 141 being pivotally connected with the lower portion of door Aframe 1 at the left or' and adjacentto the connection 12 ol" the bar 11 as shown at 15, and is held spaced from said frame by a spacing sleeve 16..

The other end ot lever 6 is pivotally connected to the lower end of the link or bar 17, the upper end of which is pivoted to the upper part of the door frame 1 at 18 and is held spaced from said frame by a spacing sleeve 19.

A stop 2O is shown mounted on the right hand side of frame 1 ttor limiting the swinging movement of the door toward the right, and a hand grip 21, is secured to the lower right hand corner of the door to facilitate its operation and when the door is swung to its eXtreme position to the left this stop engages link 11 and prevents the door 'from binding, in the same manner in which stop 2O operates when the door is moved to the right.

A door supported in the manner above described and shown in the drawing will be held suspended by the toggle-like connected links and levers without requiring any tracks or other hangers to support it, and when it is desired to open or close the door, a slight amount of exertion is required to swing it in either direction, all that is necessary being to grasp the handle 21 and move the door either to the right or to the left, the lever and link connection operating to easily guide the door and hold it sus pended in proper position without any dan ger of sticking of the door.

From the foregoing description, taken in connection with the accompanying drawings, the advantages of the construction and the method of operation will be readily apparent to those skilled in the art to which the invention apper'tains and while I Yhave described the principle of operation ofthe invention together with the device which I now consider to 'be' the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative and that such changes may be made asare within the scope of the claimed invention.

What is claimed isz- 1. The combination with a door frame and a sliding. door mounted on one :falce thereof; levers fulcrumed vintermediate their -ends on said door links pivotally kconnecting the end of said levers with the top and bottom of `said frame.

connecting them with the upper portion of the frame at longitudinally spaced points, and the adjacent ends of kthe said levers connected by links with the lower portion of the frame at points adjacent each other.

3. The combination with a door frame and z a sliding door; of operating and supporting means for the door comprising levers fulcrumed midway their ends on one face of the door, the fulcrums being in transverse alinement and spaced apart sufiiciently to permit the free swinging of the levers without contacting with each other, the remote ends of said levers havingr links pivotally connecting them with the upper portion of the frame at longitudinally spaced points and the adjacent ends of the said levers connected by links with the lower portion of the frame at points adjacent each other, and stops carried by the door and the frame respectively for limiting the movement of the door in` opposite directions to prevent binding of the operating mechanism.

In testimony whereof I aiix my signature in presence of two witnesses.

EDWARD LARSON.

IVitnesses P. MCLOUGHLIN, CECIL MCGONEGAL. 

